标题： 非线性回旋共振加速由广义电磁波 显示英文标题

标题： Nonlinear cyclotron-resonance accelerations by a generalized EM wave

摘要： 通过外部磁场中的1D、电磁、色散脉冲研究粒子加速。 发现当脉冲的长度和/或幅度变化时，众所周知的回旋加速共振可能被分为三种模式。 即，随着脉冲幅度的增加，穿越时间回旋加速共振[CRA]会演变为相位捕获，并反射粒子。 幅度、波色散以及脉冲长度强烈影响这些加速。 在两种模式之间的共振速度的量子化现象也得到了研究。 这种新机制可能导致在除了回旋频率之外的一些离散频率处出现波放大。 显示英文摘要

摘要： Particle accelerations by a 1D, EM, dispersive pulse in an external magnetic field are investigated. It is found that the well-known cyclotron resonance may be classified into three regimes as the length and/or the amplitude of the pulse are varied. Namely, as the pulse amplitude increases, the transit-time cyclotron-resonance acceleration [CRA] evolves to phase trapping, and reflect particles. The amplitude and wave dispersion as well as the pulse length strongly affect those accelerations. The interesting phenomena of quantization of resonance velocities in between the two regimes are also investigated. This new mechanism may lead to wave amplification at some discrete frequencies other than the cyclotron frequency.